nautilus_model/ffi/identifiers/
symbol.rs

1// -------------------------------------------------------------------------------------------------
2//  Copyright (C) 2015-2025 Nautech Systems Pty Ltd. All rights reserved.
3//  https://nautechsystems.io
4//
5//  Licensed under the GNU Lesser General Public License Version 3.0 (the "License");
6//  You may not use this file except in compliance with the License.
7//  You may obtain a copy of the License at https://www.gnu.org/licenses/lgpl-3.0.en.html
8//
9//  Unless required by applicable law or agreed to in writing, software
10//  distributed under the License is distributed on an "AS IS" BASIS,
11//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12//  See the License for the specific language governing permissions and
13//  limitations under the License.
14// -------------------------------------------------------------------------------------------------
15
16use std::ffi::c_char;
17
18use nautilus_core::ffi::string::{cstr_as_str, str_to_cstr};
19
20use crate::identifiers::Symbol;
21
22/// Returns a Nautilus identifier from a C string pointer.
23///
24/// # Safety
25///
26/// - Assumes `ptr` is a valid C string pointer.
27#[unsafe(no_mangle)]
28pub unsafe extern "C" fn symbol_new(ptr: *const c_char) -> Symbol {
29    let value = unsafe { cstr_as_str(ptr) };
30    Symbol::from(value)
31}
32
33#[unsafe(no_mangle)]
34pub extern "C" fn symbol_hash(id: &Symbol) -> u64 {
35    id.inner().precomputed_hash()
36}
37
38#[unsafe(no_mangle)]
39pub extern "C" fn symbol_is_composite(id: &Symbol) -> u8 {
40    u8::from(id.is_composite())
41}
42
43#[unsafe(no_mangle)]
44pub extern "C" fn symbol_root(id: &Symbol) -> *const c_char {
45    str_to_cstr(id.root())
46}
47
48#[unsafe(no_mangle)]
49pub extern "C" fn symbol_topic(id: &Symbol) -> *const c_char {
50    str_to_cstr(&id.topic())
51}
nautilus_model/ffi/identifiers/symbol.rs

nautilus_model/ffi/identifiers/
symbol.rs
